Fluoroscopy Exam Questions All Solved
Current Update
Why do we use fluoro - Answers -✔✔ We use fluoroscopy to provide real-time dynamic
viewing of anatomic structures
What is Photopic Vision - Answers -✔✔ Photopic Vision is also known as Daytime
Vision. The cones of the eye are activated when there is light
What is Scotopic Vision - Answers -✔✔ Scotopic vision is also known as Night Vision.
The Rods of the eye are activated in low light situations
What is visual acuity? - Answers -✔✔ The ability to perceive fine details. Cones do a
better job at seeing smaller objects than Rods.
What is contrast perception?. - Answers -✔✔ The ability of the eye to detect different
brightness levels. Cones are also much better at detecting different brightness levels
Can CONES perceive color? - Answers -✔✔ Yes
Can RODS perceive color? - Answers -✔✔ No
Illumination levels are measured in _________ or ________ - Answers -✔✔ Lumens
per square meter
OR
Lux
What kVp and mAs levels are used in fluoro? - Answers -✔✔ During fluoroscopy, the x-
ray tube is operated at less than 5 mA. The kVp depends entirely on the section of the
body being examined.
What is VIGNETTING? - Answers -✔✔ Vignetting is a reduction in brightness at the
periphery of an image
What is FLUX GAIN? - Answers -✔✔ Flux gain is the ratio of the number of light
photons at the output phosphor to the number of x-rays in the input phosphor
flux gain= #of light photons at the output phosphor
_____________________________________________________________
# of light photons at the input phosphor
How do you prevent FLICKER? - Answers -✔✔ by increasing the frame rate
, What is BEAM SPLITTING? - Answers -✔✔
What is a SPOT FILM? - Answers -✔✔ If the radiologist observes something during the
fluoroscopic examination and would like to preserve the image for further study, a
radiograph called a SPOT FILM can be taken without interruption of the dynamic
examination
Who invented the fluoroscope? - Answers -✔✔ Thomas Edison invented the
Fluoroscope
When was the fluoroscope invented? - Answers -✔✔ The fluoroscope was invented in
1896
What is an ANGIOGRAPHY? - Answers -✔✔ A fluoroscopic exam that is used to
visualize blood vessels.
Where is the x-ray tube located in a fluoroscopic imaging system? - Answers -✔✔ It is
located under the table
Where is the Image Intensifier (I.I) located in a fluoroscopic imaging system? - Answers
-✔✔ The Image Intensifier is located above the patient table
How much mAs is used during Fluoroscopy? - Answers -✔✔ During Fluoroscopy, the x-
ray tube is operated at less than 5 mA
How much kVp is used during Fluoroscopy? - Answers -✔✔ kVp depends entirely on
the body part being examined
Why is patient dose considerably higher during fluoroscopy exams? - Answers -✔✔
Patient dose is considerably higher during fluoroscopy because the x-ray beam exposes
the patient constantly for a considerably longer time
What is AUTOMATIC BRIGHTNESS CONTROL (ABC)? - Answers -✔✔ It is a function
in fluoroscopic equipment that allows the user to select a brightness level that is
maintained automatically
What is the principal advantage of Image-Intensified fluoroscopy over earlier types of
fluoroscopy - Answers -✔✔ Increased Image Brightness
Illumination levels are measured in what? - Answers -✔✔ Lumen per square meter OR
lux
Radiographs are visualized under illumination levels of ____ to _____ lux - Answers -
✔✔ 100-1000
Current Update
Why do we use fluoro - Answers -✔✔ We use fluoroscopy to provide real-time dynamic
viewing of anatomic structures
What is Photopic Vision - Answers -✔✔ Photopic Vision is also known as Daytime
Vision. The cones of the eye are activated when there is light
What is Scotopic Vision - Answers -✔✔ Scotopic vision is also known as Night Vision.
The Rods of the eye are activated in low light situations
What is visual acuity? - Answers -✔✔ The ability to perceive fine details. Cones do a
better job at seeing smaller objects than Rods.
What is contrast perception?. - Answers -✔✔ The ability of the eye to detect different
brightness levels. Cones are also much better at detecting different brightness levels
Can CONES perceive color? - Answers -✔✔ Yes
Can RODS perceive color? - Answers -✔✔ No
Illumination levels are measured in _________ or ________ - Answers -✔✔ Lumens
per square meter
OR
Lux
What kVp and mAs levels are used in fluoro? - Answers -✔✔ During fluoroscopy, the x-
ray tube is operated at less than 5 mA. The kVp depends entirely on the section of the
body being examined.
What is VIGNETTING? - Answers -✔✔ Vignetting is a reduction in brightness at the
periphery of an image
What is FLUX GAIN? - Answers -✔✔ Flux gain is the ratio of the number of light
photons at the output phosphor to the number of x-rays in the input phosphor
flux gain= #of light photons at the output phosphor
_____________________________________________________________
# of light photons at the input phosphor
How do you prevent FLICKER? - Answers -✔✔ by increasing the frame rate
, What is BEAM SPLITTING? - Answers -✔✔
What is a SPOT FILM? - Answers -✔✔ If the radiologist observes something during the
fluoroscopic examination and would like to preserve the image for further study, a
radiograph called a SPOT FILM can be taken without interruption of the dynamic
examination
Who invented the fluoroscope? - Answers -✔✔ Thomas Edison invented the
Fluoroscope
When was the fluoroscope invented? - Answers -✔✔ The fluoroscope was invented in
1896
What is an ANGIOGRAPHY? - Answers -✔✔ A fluoroscopic exam that is used to
visualize blood vessels.
Where is the x-ray tube located in a fluoroscopic imaging system? - Answers -✔✔ It is
located under the table
Where is the Image Intensifier (I.I) located in a fluoroscopic imaging system? - Answers
-✔✔ The Image Intensifier is located above the patient table
How much mAs is used during Fluoroscopy? - Answers -✔✔ During Fluoroscopy, the x-
ray tube is operated at less than 5 mA
How much kVp is used during Fluoroscopy? - Answers -✔✔ kVp depends entirely on
the body part being examined
Why is patient dose considerably higher during fluoroscopy exams? - Answers -✔✔
Patient dose is considerably higher during fluoroscopy because the x-ray beam exposes
the patient constantly for a considerably longer time
What is AUTOMATIC BRIGHTNESS CONTROL (ABC)? - Answers -✔✔ It is a function
in fluoroscopic equipment that allows the user to select a brightness level that is
maintained automatically
What is the principal advantage of Image-Intensified fluoroscopy over earlier types of
fluoroscopy - Answers -✔✔ Increased Image Brightness
Illumination levels are measured in what? - Answers -✔✔ Lumen per square meter OR
lux
Radiographs are visualized under illumination levels of ____ to _____ lux - Answers -
✔✔ 100-1000
